Use optional from C++17

[bmagyar]

No description provided.

[codecov-commenter]

Codecov Report

Merging #460 (96f0337) into master (e7f9962) will decrease coverage by 5.79%.
The diff coverage is 20.65%.

@@            Coverage Diff             @@
##           master     #460      +/-   ##
==========================================
- Coverage   35.78%   29.98%   -5.80%     
==========================================
  Files         189        7     -182     
  Lines       17570      737   -16833     
  Branches    11592      422   -11170     
==========================================
- Hits         6287      221    -6066     
+ Misses        994      161     -833     
+ Partials    10289      355    -9934     

Flag	Coverage Δ
unittests	29.98% <20.65%> (-5.80%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...de/diff_drive_controller/diff_drive_controller.hpp	100.00% <ø> (ø)
...ontroller/test/test_load_diff_drive_controller.cpp	12.50% <0.00%> (ø)
diff_drive_controller/src/odometry.cpp	42.16% <11.11%> (ø)
...ive_controller/test/test_diff_drive_controller.cpp	17.62% <12.08%> (ø)
diff_drive_controller/src/speed_limiter.cpp	46.55% <13.33%> (ø)
...troller/include/diff_drive_controller/odometry.hpp	20.00% <20.00%> (ø)
...iff_drive_controller/src/diff_drive_controller.cpp	32.67% <24.89%> (ø)
...mand_controller/src/forward_command_controller.cpp
...include/joint_trajectory_controller/tolerances.hpp
...ntroller/test/test_load_joint_state_controller.cpp
... and 192 more

[destogl]

@Mergifyio backport humble

[mergify]

backport humble

❌ No backport have been created

• Backport to branch humble failed: Branch not found